Math Links for Week Ending July 17th, 2026

Featured Links

I have always liked @SimonKuestenmacher's shares but I like when other teachers like @MaryBourassa, see the connections to math class. In this case with fractions
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/marybourassa.bsky.social/post/3mqk26esj722o

The world’s 8.2 billion people, shown as a single tree map. India and China dominate, Africa is already nearly twice the size of Europe, and Australia barely registers. Source: buff.ly/P5OtmPg

[image or embed]

— Simon Kuestenmacher (@simongerman600.bsky.social) July 13, 2026 at 8:01 AM

Resource Links

You can never have too many Calculus resources. 
Curriculum Tags: MCV4U
https://ocw.mit.edu/courses/res-18-001-calculus-fall-2023/

FREE Math Book. 705 pages.

"Calculus" by Strang. Highly recommended for its clear explanations and practical engineering focus.
1. Intro
2. Derivatives
3. Applications of Derivatives
4. Derivatives and the Chain Rule
5. Integrals
6. Exponentials and… pic.twitter.com/YUh5bqUDcp

— Cliff Pickover (@pickover) July 12, 2026

Video Links

I think the comparison to the word diagonal is a good way to do this. 
Curriculum Tags: All
https://x.com/howie_hua/status/2078170427864850554

How to pronounce pentagonal, hexagonal, heptagonal, and polygonal pic.twitter.com/36ARdE9moP

— Howie Hua (@howie_hua) July 17, 2026

Image Links

I love this for having students show that they know the connections between functions and their first and second derivatives.
Curriculum Tags: MCV4U
https://x.com/pickover/status/2076124990466892099

Mathematics.

Need an exam question for Calculus? Which graph is f, f’, and f” ? (by @dansmath, used with permission). pic.twitter.com/a8joMByNdv

— Cliff Pickover (@pickover) July 12, 2026

Some similar angles and algebra for your students
Curriculum Tags: MPM2D, MCR3U
https://x.com/jamestanton/status/2076160370675154953

How we left our rakes today reminder me of a famous math puzzle.
What's h in terms of a and b?
[Curiously, the answer does not depend on how far apart the walls are!] pic.twitter.com/dw1wzBCAyX

— James Tanton (@jamestanton) July 12, 2026

Math Links for Week Ending July 10th, 2026

Featured Links

This post starts with asking to finish two similar but very different sentences "Math is ______" and "School Math is ______" and ends with reminders of several different structures to help students bridge the two statements.
Curriculum Tags: All
https://fawnnguyen.substack.com/p/the-anti-sentence

Last week in Phoenix, a teacher filled in "school math is ___" with one word: required.
New post about this deadpan truth. https://t.co/CCr9ymbVSY

— Fawn Nguyen (@fawnpnguyen) July 5, 2026

Resource Links

I'm always happy to share other posts like mine who share what people are doing for math on the net and @MathsJem does that quite a bit. 
Curriculum Tags: All
https://www.resourceaholic.com/2026/07/5-maths-gems-200.html

New! My 200th gems post. Ideas, updates and resources for maths teachers. 💎 https://t.co/xJGjdTPfeV#mathsgems #mathschat #teammaths #mathscpdchat #mathstlp pic.twitter.com/8GxU48UOK1

— Jo Morgan (@mathsjem) July 5, 2026

Video Links

Some combinatorics for you
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2074853362097344943

How many ways can 5 couples sit in a row if each person needs to sit next to their partner? pic.twitter.com/ghTvreJqOK

— Howie Hua (@howie_hua) July 8, 2026

Image Links

These types of relationships, to me, really show how math can be amazing. 
Curriculum Tags: All
https://x.com/pickover/status/2073891040075940072

Mathematics. Golden Ratio.

The dreams of humans touch on the eternal.
(Equation source: https://t.co/gnkiQFMrp2) pic.twitter.com/FWxL57VaD6

— Cliff Pickover (@pickover) July 5, 2026

Math Links for Week Ending July 3rd, 2026

Featured Links

I always appreciate the work that @DavidButlerUoA does, especially when he puts it all together and shares. In this case, constructions using 2 sides of a ruler. I don't know that this fits into any particular curriculum and that's the beauty of it. It starts with some introductory constructions and quickly ramps up.  
Curriculum Tags: All
https://davidkbutler.xyz/2026/06/25/two-sided-ruler-constructions-1-introduction/

#MathSky Finally, I've updated the first post in the series with a link to the playlist of videos and an index of links to every individual construction in all eight posts. Now you (and I) can find anything I've written about two-sided ruler constructions anytime. davidkbutler.xyz/2026/06/25/t...

[image or embed]

— David K Butler (@davidkbutler.bsky.social) July 3, 2026 at 8:25 PM

Resource Links

Another one about constructions. Though this isn't about how to actually do constructions (you might like my videos on that), it's a nice little set of questions to make specific constructions and then to check them electronically with this site. 
Curriculum Tags: All
https://www.transum.org/software/SW/Starter_of_the_day/Students/Constructions.asp

Mixed media learning (sounds good). Students complete construction exercises using a pencil, ruler and compasses, then measure a length on their construction. They type it online, which awards the mark if within a given tolerance. www.transum.org/Intro/?ID=403 #mathsresources #mathstoday

[image or embed]

— transum.bsky.social (@transum.bsky.social) July 3, 2026 at 5:57 AM

Video Links

I always appreciate unconventional methods of doing things. 
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/2072699932998340865

This fraction comparison strategy is underrated pic.twitter.com/94Kc9LZXvi

— Howie Hua (@howie_hua) July 2, 2026

Image Links

It took me many years (and a student to tell me) to realize I had to get to know my students. I wish I had known sooner. 
Curriculum Tags: All
https://bsky.app/profile/camatsumoto10.bsky.social/post/3mprge6pwec2z

@camatsumoto10.bsky.social

[image or embed]

— Carol Matsumoto (@camatsumoto10.bsky.social) July 3, 2026 at 4:50 PM

Math Links for Week Ending June 25th, 2026

Featured Links

I think it's important for kids to work on problems like this, either in groups or individually. 
Curriculum Tags: All

https://bsky.app/profile/stevemaths.bsky.social/post/3mongp2hsfk2s

Here's a slight twist on an arithmetic grid for this week's #OCRMathsPuzzle. Find the values for p and q so that the arithmetic grid below can be completed. #MathsToday #UKMathsChat #RecreationalMath @cambridgeocr.bsky.social

[image or embed]

— Steve Walker (@stevemaths.bsky.social) June 19, 2026 at 9:21 AM

Resource Links

If you are using Desmos Notebook then you can't have enough resource to help "pimp" your pages out
Curriculum Tags: All

https://bsky.app/profile/desmos.com/post/3mp7mg3ugh22e

Connected variables and tokens bring all your Notebook elements together. What question should we answer next? #iteachmath #mathsky

[image or embed]

— Desmos Studio (@desmos.com) June 26, 2026 at 2:51 PM

Video Links

I like anything that helps visualize completing the square
Curriculum Tags: MPM2D,  MCR3U, MCF3M, MBF3C

https://x.com/howie_hua/status/2068707217973354815

I wish I was shown how we can visually derive the difference of two squares formula pic.twitter.com/nzWVIo6AOP

— Howie Hua (@howie_hua) June 21, 2026

Image Links

I can't get enough mathematical art
Curriculum Tags: All

https://bsky.app/profile/helsig.bsky.social/post/3mp7lkwgjo22t

Circle packing within a spiral lattice. #CreativeCoding #MathArt #MathSky #phyllotaxis #SciArt

[image or embed]

— Daniel Wilson (@helsig.bsky.social) June 26, 2026 at 2:36 PM

Math Links for Week Ending June 19, 2026

Featured Links

I have mixed feelings about timed tests, but they can be useful for motivated students. Regardless I love this interface with the duelling timers and all the options you can use for the questions themselves. And there is not just math but biology, physics, chemistry, computer science and even english.
Curriculum Tags: All
https://classduels.com/

Here's something I've been working quite hard on recently: classduels.com/maths/ A Maths game featuring: - two-player (split screen, can be done on a interactive whiteboard) and single-player modes - 50+ topics across KS3-KS5 - a version for the Australian curriculum: classduels.com/maths/au/ 😉

[image or embed]

— Nathan Day (@nathanday.bsky.social) May 17, 2026 at 3:41 PM

Resource Links

Patterns? Of course it does
Curriculum Tags: All
https://studyfinds.com/van-goghs-brushstrokes-may-have-math-fingerprint/

studyfinds.com/van-goghs-br... Strokes of Genius: Van Gogh’s Paintings May Have a Mathematical Fingerprint #Math #Maths #MathSky #iteachmath #VanGogh #fractaldimension

[image or embed]

— Dawn Del Vecchio (@dawndelvecchio.bsky.social) June 18, 2026 at 1:42 PM

Lots of great problems, now available for free. Thanks to @EliLuberoff for pointing this out.
Curriculum Tags: All
https://www.citizenmath.com/

Video Links

Pokemon and expected value
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2067976421369368898

Which Pokémon move will do more damage per turn on average: Flamethrower or Fire Blast? Let's learn about expected value. pic.twitter.com/YzTxkYyGT2

— Howie Hua (@howie_hua) June 19, 2026

Image Links

Something to use in an exponential lesson about extrapolation
Curriculum Tags: MCR3U, MHF4H
https://bsky.app/profile/xkcd.com/post/3moj6x2c3fk2x

Messi xkcd.com/3260/

[image or embed]

— Randall Munroe (@xkcd.com) June 17, 2026 at 4:51 PM

Great for working with roots and simplifying 
Curriculum Tags: MTH1W, MPM2D
https://bsky.app/profile/percybuttons3.bsky.social/post/3mok5mpmbp222

Math Links for Week Ending June 12, 2026

Featured Links

I agree. The community on Twitter was great. It was some of the best self directed PD I had experienced. Plus I "met" so many new like minded people (sometimes even in person). It is unfortunate that that platform waned in that capacity. I still post there and look from time to time but I love how the community on Bluesky, although small, is starting to fill that hole. 
Curriculum Tags: All
https://bsky.app/profile/mathowitz.bsky.social/post/3mo433ox6222j

Why am I on Bluesky? Because we used to have #mtbos on twitter. Then Twitter turned into X which turned into a steaming pile of vitriol... and I had to leave. A decent amount of us landed here, and even though it's not the same, it's better than nothing.

— Carl (@mathowitz.bsky.social) June 12, 2026 at 11:38 AM

The #math community seems to be growing here and becoming more active. I have presented on how to get the most of being in a community like this many times and here are my tips to grow this PLN and make it useful for educators. Bonus Tip - Use the Feeds: #MathChat #MTBoS #iTeachMath #MathSky

[image or embed]

— DavidPetro314 (@davidpetro314.bsky.social) November 23, 2024 at 7:32 PM

Resource Links

Somehow I missed the May "classic" NCTM calendar.
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/05/01/may-calendar-problems-4/

The May #ProblemSolving Calendar is here! Solve yourself or w/your students & share your working-out thoughts here or on the blog.

*special theme* -- Function Composition #Algebra2 #precalculus#iTeachMath #MTBoS #T3Learns #RecreationalMath #MathsTodayhttps://t.co/Z5IhEWoDqP

— Karen Campe (@KarenCampe) May 1, 2026

I think we are going to start seeing a lot of people sharing their @DesmosStudio Notebook pages now that they are available to be created. 
Curriculum Tags: MTH1W
https://www.desmos.com/notebook/syajf6ddqw/view

Here's a #Desmos notebook I made to support one of my Algebra 2 lessons next September. I think these will be really useful as "digital manipulatives" that students can play with to build intuition. #EduSky #ITeachMath www.desmos.com/notebook/sya...

[image or embed]

— Darth Calculus 🏳️‍🌈 (@darthcalculus.bsky.social) June 11, 2026 at 8:52 AM

Video Links

I think this would be a good starter as a catalyst to talk about sums of series.
Curriculum Tags: MCR3U
https://x.com/howie_hua/status/2065493735132086507

You are not going to believe what (1²+2²+3²+...+100²)/(1+2+3+...+100) simplifies to... pic.twitter.com/N59mlCaU5Y

— Howie Hua (@howie_hua) June 12, 2026

Image Links

Here is a fun little puzzle when your students are starting to learn algebra.
Curriculum Tags: MTH1W, Gr8
https://bsky.app/profile/pwharris.bsky.social/post/3mo2fvrkhdk2z

#TryThisThursday It's factor puzzle time! The one on the left shows the relationships to apply to the one on the right. What goes in the blanks? How do you know? #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

[image or embed]

— Pam Harris (@pwharris.bsky.social) June 11, 2026 at 7:46 PM

Introducing or reviewing Function notation? This might be a good puzzle
Curriculum Tags: MCR3U, MCF3M
https://bsky.app/profile/mathsadvance.bsky.social/post/3mo5xdr2x3k2d

How long to solve? Given that f(x) is linear (ax + b) express 'b' in terms of 'a'. #MathSky #MathsToday #ProblemSolving

[image or embed]

— Maths Advance (@mathsadvance.bsky.social) June 13, 2026 at 5:36 AM

Math Links for Week Ending June 5th, 2026

Featured Links

Perfect for adding vectors (or even you could connect it to adding integers). Either way, as someone who is a graduate of physics, this would be totally fun.
Curriculum Tags: MCV4U
https://x.com/ScienceExpand/status/2060936498481115603

The Crazy physics of launching at 80 km/h from a truck already moving 80km/h pic.twitter.com/wlhwfgUHo5

— Science Magazine (@ScienceExpand) May 31, 2026

Resource Links

Some self checking resources on Similar Triangles
Curriculum Tags: Gr7, Gr8, MTH1W
https://www.transum.org/Maths/Activity/Similar/Triangles/

A new set of self-marking exercises called Similar Triangles has been created. It builds on the practice already offered by the Similar Shapes exercise, exploring triangle similarity in more detail. www.transum.org/Intro/?ID=1175 #mathsresources #mathschat #mathstoday #mathchat

[image or embed]

— transum.bsky.social (@transum.bsky.social) June 5, 2026 at 5:57 AM

Video Links

You can never have enough ways to explain division with integers
Curriculum Tags: Gr7, Gr8, MTH1W
https://x.com/howie_hua/status/2061935439423177007

Here's how I would explain why a negative divided by a negative equals a positive to kids pic.twitter.com/HdNWw92xhG

— Howie Hua (@howie_hua) June 2, 2026

Image Links

I like this one because it could be used at any grade level
Curriculum Tags: All
https://bsky.app/profile/pwharris.bsky.social/post/3mnix7j42ck23

#TryThisThursday If one doesn't belong, how are the other three related? Do it for each quadrant! what the other three have in common! #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

[image or embed]

— Pam Harris (@pwharris.bsky.social) June 4, 2026 at 9:08 PM

Math Links for Week Ending May 29th, 2026

Featured Links

A couple of links to help students with exceptionalities. 
Curriculum Tags: All
https://autismspectrumnews.org/beyond-barriers-making-mathematics-accessible-for-autistic-students/
https://www.edutopia.org/article/supporting-neurodivergent-students-math

Hands-on math strategies can help autistic students build confidence, problem-solving skills, and greater independence. #Autism #MathEducation #SpecialEducation #Neurodiversity 📰 Read the article: https://autismspectrumnews.org/beyond-barriers-making-mathematics-accessible-for-autistic-students/

[image or embed]

— Autism Spectrum News (@autismspectrumnews.bsky.social) May 27, 2026 at 1:01 PM

These 5 instructional strategies can help you create a more supportive math classroom experience for neurodivergent learners! ✖️➕ #MathSky #ITeachMath #EduSky

[image or embed]

— Edutopia (@edutopia.org) May 28, 2026 at 7:39 PM

Resource Links

Need some Frustrum practice and resources? Look no further
Curriculum Tags: MTH1W
https://www.transum.org/Maths/Exercise/Frustum/

Well every day is a school day! It was while preparing this online exercise on frustums that I learned that there is more than one formula or method that can be used to find the volume. I live and learn. www.transum.org/Intro/?ID=1172 #mathsresources #mathschat #mathstoday #mathchat

[image or embed]

— transum.bsky.social (@transum.bsky.social) May 28, 2026 at 5:57 AM

Video Links

Last week @DesmosStudio introduced Desmos Notebook. Here's a brief mini tutorial on adding an existing graph.
Curriculum Tags: All
https://bsky.app/profile/desmos.com/post/3mmz67vks6s2j

Have you checked out Desmos Notebook yet? Importing your favorite Desmos graphs into Notebook is a great way to get started. What question should we answer next? #mathsky #iteachmath #iteachphysics

[image or embed]

— Desmos Studio (@desmos.com) May 29, 2026 at 2:30 PM

Those are like Peewee Herman cards :-)
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2060125131226361994 

I have two shuffled 52 card decks. If I reveal one card from each deck at the same time and I exhaust the decks, what's the probability of flipping the same exact card at least once? pic.twitter.com/coh3c8fLNK

— Howie Hua (@howie_hua) May 28, 2026

I love how the straight line motion produces the circular motion
Curriculum Tags: All
https://x.com/Rainmaker1973/status/2060403934246670336 

Each sphere is moving in a straight line, but the final motion is circularpic.twitter.com/nK4GjYXlZm

— Massimo (@Rainmaker1973) May 29, 2026

Image Links

I'm glad someone else was able to figure out what it was saying, cuz I couldn't
Curriculum Tags: MTH1W
https://bsky.app/profile/segarrogers.bsky.social/post/3mmwfpnfm7c2t

So I'm reading about the origins of algebra ... and I find this from Abū Kāmil in about 900CE ... and of course Kāmil's algebra (al-jabr!) could solve this. Pretty amazing really. #UKMathsChat #iTeachMath

[image or embed]

— Segar Rogers (@segarrogers.bsky.social) May 28, 2026 at 12:07 PM

Math Links for Week Ending May 22nd, 2026

Featured Links

This is a super cool new feature of @Desmos Studio (and it works with all the calculators). I can't wait to try it out. 
Curriculum Tags: All
https://www.desmos.com/notebook/fgedhep7ta/view

Introducing Desmos Notebook (beta), our newest tool that combines text, expressions, sliders, and graphs all in one place. As you get to know Notebook, we’d love to hear your feedback, feature requests, and any bugs you find. We can’t wait to see what you create! #iteachmath #mathsky #iteachphysics

[image or embed]

— Desmos Studio (@desmos.com) May 22, 2026 at 9:24 AM

 

Resource Links

Department heads don't always have avenues for advice. So any little bit helps
Curriculum Tags: All
https://www.resourceaholic.com/2026/05/tasks-for-summer-term.html

I wrote a post for new/inexperienced Heads of Maths about some of the things they can do this term to ensure their department hits the ground running in September. Hope someone finds it helpful!https://t.co/9pSJBYyr0E#mathschat #mathsgems #mathscpdchat #teammaths pic.twitter.com/Bw4So6nv4Z

— Jo Morgan (@mathsjem) May 17, 2026

Video Links

A couple of related videos about flipping coins. I like the problem context of the second one
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2057191476036288755
https://x.com/howie_hua/status/2057574765465104573

If you repeatedly flip a coin, which sequence is more likely to appear first: HTT or TTH?

Believe it or not, one is 3 times more likely to appear first! pic.twitter.com/u2SR5BPmEz

— Howie Hua (@howie_hua) May 20, 2026

In my last video, we saw that if we repeatedly flip a coin, there's a 75% chance that HTT will appear first in the sequence over TTH.

This is part of something potentially weirder. Let's learn about Penney's game. pic.twitter.com/vXhnKfr459

— Howie Hua (@howie_hua) May 21, 2026

Image Links

Nice variations
Curriculum Tags: All
https://bsky.app/profile/murrayh83.bsky.social/post/3mlqvgx6br222

Pattern block play! #21CenturyPB #iTeachMath

[image or embed]

— Hana Murray (@murrayh83.bsky.social) May 13, 2026 at 2:07 PM

Math Links for Week Ending May 15th, 2026

Featured Links

This is a neat video from the staff of the  Harvard Math dept. 
Curriculum Tags: All
https://www.youtube.com/watch?v=VI5fUKPK2No

Resource Links

This looks interesting. This part of the description caught my eye "....This training will be useful for dyslexia assessors who want to assess for dyscalculia.."
Curriculum Tags: All
https://www.patoss-dyslexia.org/Live-Webinars/development-and-understanding-of-mathematical-skills-within-primary-and-secondary-education/16299?OccId=22276

Join us on Wednesday 20 May for a live CPD webinar with Alison Tallentire, exploring how mathematical skills develop across primary and secondary education. 👉 Book: www.patoss-dyslexia.org/Live-Webinar... #MathsEducation #Dyscalculia #SpLD #PrimaryMaths #SecondaryMaths #InclusivePractice

[image or embed]

— Patoss (@patoss-dyslexia.bsky.social) May 15, 2026 at 7:15 AM

Video Links

@Howie_Hua continues to do some Pokemon themed math, this time with combinatorics. 
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2055022858578055532

How many different teams of 6 Eeveelutions are there when there are 8 Eeveelutions? pic.twitter.com/VHkgPcXJll

— Howie Hua (@howie_hua) May 14, 2026

Image Links

Looking for a discussion prompt dealing with proper and improper fractions?
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/mathsvault.bsky.social/post/3mlvkad2u3v2h

Discuss — Add And Subtract Improper Fractions And Mixed Numbers #maths #mathsteacher #UKMathsChat #GCSEMaths #MathsChat #Discussion #MathsDiscussion #TalkTasks

[image or embed]

— Jon @ The Maths Vault (@mathsvault.bsky.social) May 15, 2026 at 10:30 AM

Math Links for Week Ending May 8th, 2026

Featured Links

I have lots of opinions about appropriate assessment and alternatives to the traditional assessments, so I'm always interested in other ideas
Curriculum Tags: All
https://www.edutopia.org/article/my-5th-graders-taking-math-tests

A math test format that reduces stress for students *and* teachers? Yes, it’s possible! 🙌 Check out how this school gave assessments a makeover. #MathSky #ITeachMath #EduSky

[image or embed]

— Edutopia (@edutopia.org) May 5, 2026 at 6:36 PM

Resource Links

Check out @Mathsjem's list of resources. 
Curriculum Tags: All
https://www.resourceaholic.com/2026/05/5-maths-gems-198.html

New! My 198th gems post. Ideas, updates and resources for maths teachers. 💎 https://t.co/hLENa05kYk

Hat tips to follow. #mathsgems #mathschat #teammaths #mathscpdchat #mathstlp pic.twitter.com/jE7VQ7xCA8

— Jo Morgan (@mathsjem) May 3, 2026

Video Links

A little sense of how you could use thin slicing with trig
Curriculum Tags: MPM2D, MFM2P
https://x.com/TimBrzezinski/status/2050222840897552700

Start of a #ThinkingClassroom thin slice in #geometry class yesterday. @pgliljedahl @BTCthinks #buildingthinkingclassrooms pic.twitter.com/CAcYVUW4JD

— Tim Brzezinski (@TimBrzezinski) May 1, 2026

Some fun with difference of squares
Curriculum Tags: MPM2D, MFM2P
https://x.com/howie_hua/status/2052791346583257283

How did he compute 255²-245² so quickly? Here's a good mental math trick. pic.twitter.com/R25m43eFB7

— Howie Hua (@howie_hua) May 8, 2026

Image Links

Something for next year
Curriculum Tags: All
https://x.com/howie_hua/status/2051331153072717946

May the fourths be "with you"! pic.twitter.com/sGWzKqQWck

— Howie Hua (@howie_hua) May 4, 2026

Math Links for Week Ending May 1, 2026

Featured Links

It is OAME2026 our annual Ontario Association for Mathematics Education annual conference. I presented 3 sessions this year. They can all be accessed at the link below
Curriculum Tags: All
http://bit.ly/oame-petro

I just finished My session on resources for teaching #quadratics in #math class at the @OAMElearns #OAME2026 conference. You can get the slides here:https://t.co/indBLptcoZ#MathChat #iTeachMath #MTBoS pic.twitter.com/noUx1lXUh4

— David Petro (@davidpetro314) April 30, 2026

My second session was about how to build @Amplify classroom tasks (without CL) at the @OAMElearns #OAME2026 conference:https://t.co/indBLptcoZ#MathChat #MTBoS #iTeachMath pic.twitter.com/I9cD8wqlsj

— David Petro (@davidpetro314) May 1, 2026

My third session was showing gr 7&8 #math teachers all the great premade @Amplify classroom tasks at the@OAMElearns #OAME2026 conference: https://t.co/indBLptcoZ #MathChat #MTBoS #iTeachMath pic.twitter.com/bIeHk820Cy

— David Petro (@davidpetro314) May 1, 2026

Resource Links

OAME - Great culminating activity for gr 9 math 
Curriculum Tags: MTH1W
https://drive.google.com/drive/folders/11Ofdgs5nGW4MITiB4ybyiIbuCD7DSKz4

Modelling #math by creating a Food Truck from Elysabeth Barnes at @OAMElearns #OAME2026 for grade 9 MTH1W. Get the folder of resources here:https://t.co/U3DBXYmbXY#MathChat #MTBoS #iTeachMath pic.twitter.com/IutecPjiHx

— David Petro (@davidpetro314) April 30, 2026

OAME - A great reminder of how important starters are. 
Curriculum Tags: All
https://docs.google.com/presentation/d/17wmTZGoxa-F-TU51b-uICcMzMn1Ksv5IKyWgn_odZ14/edit?slide=id.p#slide=id.p

It's @theericklee at #OAME2026 coming from the east coast to talk about the power of the first 5 min of class. With references to lots of #math class favs & including other curated math resources, check them all out here:https://t.co/OIKhSka87Y#MathChat #MTBoS #iTeachMath pic.twitter.com/cawZJxgcGi

— David Petro (@davidpetro314) April 30, 2026

OAME - Ideas that exploit AI for useful purposes in math class
Curriculum Tags: All
https://docs.google.com/presentation/d/1n-FZXTKSv6E4pG-VSgmJ0DDG8Y0qwCpT1VOFJvMwIeg/edit

Getting tips on using Google's Gemini Suite in #math class from @robinmath3 at the @oamelearns #OAME2026 conference.https://t.co/N0CSQwIVwP#MathChat #MTBoS #iTeachMath pic.twitter.com/N1zNJ5X7fo

— David Petro (@davidpetro314) April 30, 2026

OAME - Sound advice from Dr. Pam Seda
Curriculum Tags: All
http://tinyurl.com/SedaMay1

Lot's of great equity based resources shared by Dr. Pam Seda at the @OAMElearns #OAME2026 Conference Day 2 Keynotehttps://t.co/7hWJ5jVRLj#MathChat #MTBoS #iTeachMath pic.twitter.com/L6jMZ5ZRrj

— David Petro (@davidpetro314) May 1, 2026

OAME - Great session on how to turn regular rich problems into something better (and useful in a Thinking Classroom)
Curriculum Tags: All
https://www.kylewebb.ca/oame26

Great session from @webbkyle & @KirstDy on how to remix an already rich problem at the @OAMElearns #OAME2026 conference. They also shared some great problem solving resources:https://t.co/MCjVL2kWDe#MathChat #MTBoS #iTeachMath pic.twitter.com/am5ZHi0mjM

— David Petro (@davidpetro314) May 1, 2026

OAME - Free resources from @PWHarris
Curriculum Tags: All
 https://www.mathisfigureoutable.com/big

Free resource from @pwharris on numeracy strategies https://t.co/6vYAYMDn0k#OAME2026 pic.twitter.com/KY2FtUP2In

— David Petro (@davidpetro314) April 30, 2026

Video Links

A nice simple visualization of this classic probability problem. 

Curriculum Tags: All
https://x.com/howie_hua/status/2048452433895129532

This is a very common misconception in statistics:

If 1% of a population has a disease and the tests have a 5% chance of giving a false positive, what's the probability of having the disease given that we tested positive?

The answer is NOT 95%. It's actually way less. pic.twitter.com/HoLm7zOTjB

— Howie Hua (@howie_hua) April 26, 2026

More Pokemon probabilities
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2049585872966996285

If there is a 1/4096 shiny encounter rate, how many encounters do we need to have a 99% chance of encountering a shiny Pokémon? pic.twitter.com/z3PFlBZC4m

— Howie Hua (@howie_hua) April 29, 2026

Image Links

OAME - Great stuff from @PWHarris
Curriculum Tags: All
https://x.com/davidpetro314/status/2049841170008678512

"My job as an educator is to build kids brains, not to have them get answers to math questions" - @pwharris is the opening keynote at the @OAMEcounts #OAME2026 annual conference pic.twitter.com/ceG2En8q55

— David Petro (@davidpetro314) April 30, 2026

OAME - That's definitely the reason
Curriculum Tags: All
https://x.com/davidpetro314/status/2049847083906027563

What is the purpose of teaching math? - @pwharris

To develop mathematical reasoning #OAME2026 pic.twitter.com/0QMG97e8Ls

— David Petro (@davidpetro314) April 30, 2026

Math Links for Week Ending Apr 24, 2026

Featured Links

Who doesn't want a large bank of challenging math problems?
Curriculum Tags: All
https://phys.org/news/2026-04-world-largest-olympiad-math-problems.html

phys.org/news/2026-04... World's largest collection of Olympiad-level math problems now available to everyone #Math #Maths #MathSky #MathOlympiad #iteachmath

[image or embed]

— Dawn Del Vecchio (@dawndelvecchio.bsky.social) April 23, 2026 at 5:09 PM

Resource Links

It's too late for Fawn but you can still check out the last one in this series or the summaries on the podcast
Curriculum Tags: All 
https://www.strongermath.com/mrc/

Hi hi! It's been a while.
I'm excited to share how I facilitate a 𝘃𝗶𝘀𝘂𝗮𝗹 𝗽𝗮𝘁𝘁𝗲𝗿𝗻𝘀 routine! Hope to learn from you also.

𝗦𝘂𝗻𝗱𝗮𝘆, 𝗔𝗽𝗿𝗶𝗹 𝟭𝟵, 𝗮𝘁 𝟭:𝟬𝟬 𝗣𝗠 𝗣𝗦𝗧
Register for the Math Routine Collaborative at https://t.co/mOHBC2r43C@Sneffleupagus pic.twitter.com/pj1LOpQQ67

— Fawn Nguyen (@fawnpnguyen) April 18, 2026

Radicals can be tricky so it's always good to see other approaches
Curriculum Tags: MPM2D, MCR3U, MCF3M
https://karendcampe.wordpress.com/2026/04/22/really-radical/

New blog post! "Really Radical" talks about how to handle teaching a tough topic in #algebra2 so students aren't lost in the weeds. #iTeachMath #MTBoS #T3Learns https://t.co/Qqso24wkwJ

— Karen Campe (@KarenCampe) April 23, 2026

Video Links

I can't get enough probability questions
Curriculum Tags: MDM4U
https://x.com/howie_hua/status/2047435455516549402

The probability of finding a Pikachu in Viridian Forest is 5% so you just need 20 encounters to ensure finding a Pikachu, right? Math doesn't work out like that. Let's do the math to find the probability of encountering at least one Pikachu in 20 encounters. pic.twitter.com/iQSQCP5CyS

— Howie Hua (@howie_hua) April 23, 2026

Image Links

A nice area related question
Curriculum Tags: MTH1W
https://bsky.app/profile/stevemaths.bsky.social/post/3mkadudzuk22w

Here is the first #OCRMathsPuzzle of the summer term. Diagram shows a square ABCD with quarter circles drawn with centres at A and B, radius equal to the side length. What percentage of the square has been covered by the quarter circles? #UKMathsChat #MathsToday @cambridgeocr.bsky.social

[image or embed]

— Steve Walker (@stevemaths.bsky.social) April 24, 2026 at 6:44 AM

Math Links for Week Ending Apr 17, 2025

Featured Links

When I saw this show up in my Facebook feed, I thought for sure it had to be fake. But no, it's real
Curriculum Tags: All
https://www.calculator.org/calculators/Casio_QL-10.html

I saw this come across one of my feeds and I thought it was fake. But it turns out that in 1979, the #Casio "Calculighter" was legit www.calculator.org/calculators/... #MathChat #MTBoS #iTeachMath

[image or embed]

— DavidPetro314 (@davidpetro314.bsky.social) April 17, 2026 at 5:52 PM

Resource Links

The idea of sharing resources is the best reason to be in a space like this. The old Twitter Matheverse was great but it's getting better on Bluesky. Keep sharing, everyone
Curriculum Tags: MCR3U
https://bsky.app/profile/theericklee.bsky.social/post/3mjkzz76xd22e

Gave this warmup question to my class today. Students had to think carefully about the function and what x represents in each statement. Great discussions. @studymaths.bsky.social #ITeachMath #MathSky

[image or embed]

— Erick Lee (@theericklee.bsky.social) April 15, 2026 at 7:22 PM

Video Links

I'm not a fan of math "tricks" but I am a fan of anyone who can explain why they work
Curriculum Tags: Gr8, MTH1W
https://x.com/howie_hua/status/2044875275566268435

Visually showing why "keep change flip" works pic.twitter.com/EbxAUwr7F0

— Howie Hua (@howie_hua) April 16, 2026

Image Links

This is a good lesson in the Commutative Property of multiplication and also the idea of trying to do a similar problem that is easier but has the same answer. 
Curriculum Tags: Gr8, MTH1W
https://bsky.app/profile/pwharris.bsky.social/post/3mjnkqgjzwc2h

#TryThisThursday Try Would You Rather as such a great routine to get students thinking and sharing about mathematical relationships. Which is your favorite and why? #MathIsFigureOutAble #MTBoS #ITeachMath #MathEd

[image or embed]

— Pam Harris (@pwharris.bsky.social) April 16, 2026 at 7:27 PM

Math Links for Week Ending Apr. 10, 2026

Featured Links

You can always count on @DavidKButler to go deep on a very cool math concept. This is perfect for showing the connections of different branches of math.
Curriculum Tags: All
https://davidkbutler.xyz/2026/04/10/home-away-geometric-arithmetic/

New blog post about my method of doing addition and multiplication using the geometry of parallel lines. It's called "Home & Away: Gometric Arithmetic". davidkbutler.xyz/2026/04/10/h...

[image or embed]

— David K Butler (@davidkbutler.bsky.social) April 10, 2026 at 2:23 AM

Resource Links

When I was a kid we made stop motion "movies" by drawing stick figures in novels. So it makes perfect sense to me to do stop motion for math too. 
Curriculum Tags: All
https://www.edutopia.org/article/stop-motion-movies-school-math

Stop-motion movies are made by recording one small change at a time—the perfect medium for capturing several fundamental math concepts! 📹 #MathSky #ITeachMath #EduSky

[image or embed]

— Edutopia (@edutopia.org) April 3, 2026 at 6:18 PM

Video Links

I love taking what seems like a trick then making it real by doing the math
Curriculum Tags: MTH1W
https://x.com/howie_hua/status/2042018764808667479

A quick way of finding a fraction between two fractions pic.twitter.com/Nk7DgkkyDP

— Howie Hua (@howie_hua) April 8, 2026

Image Links

A classic demonstration 
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/math-problems.bsky.social/post/3mizkibgkcc2n

Demonstration of Triangle Sum #iteachmath #geometry

[image or embed]

— math-problems.bsky.social (@math-problems.bsky.social) April 8, 2026 at 8:29 PM

Math Links for Week Ending Apr 3, 2026

Featured Links

I love this visual
Curriculum Tags: MCV4U
https://x.com/howie_hua/status/2038341287603282340

You can do this calculus problem with just any random book 😱 pic.twitter.com/LGndHMlJ81

— Howie Hua (@howie_hua) March 29, 2026

Resource Links

You can never have enough sources of resources
Curriculum Tags: All
https://www.resourceaholic.com/2026/04/5-maths-gems-197.html

New! My 197th gems post. Ideas, updates and resources for maths teachers. 💎 www.resourceaholic.com/2026/04/5-ma... #ukmathschat #mathstoday #alevelmaths

[image or embed]

— Jo Morgan (@mathsjem.bsky.social) April 3, 2026 at 6:40 AM

The latest classic NCTM calendar
Curriculum Tags: All
https://karendcampe.wordpress.com/2026/04/01/april-calendar-problems-4/

The April #ProblemSolving Calendar is posted & that's no fooling!!
Plus March solutions as well.
Share your working out & thoughts here or on the post. #iTeachMath #MTBoS #MathsToday#RecreationalMath #MathChathttps://t.co/yAZPMe109h

— Karen Campe (@KarenCampe) April 2, 2026

 

Video Links

People complain that things are worse now. The data says otherwise
Curriculum Tags: MDM4U
https://x.com/toddrjones/status/2039771217553461667

Here are some ways in which the world has gotten better. pic.twitter.com/v1Py5NtQ7L

— Todd Jones 🦊 (@toddrjones) April 2, 2026

Fibonacci to the party
Curriculum Tags: All
https://x.com/howie_hua/status/2039721193918648801

Let's learn about the golden ratio pic.twitter.com/iMnoH4d8Qd

— Howie Hua (@howie_hua) April 2, 2026

Image Links

Very nice prompt
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/mathsvault.bsky.social/post/3milwnnonl52w

Discuss — Factors of a number #maths #mathsteacher #UKMathsChat #GCSEMaths #MathsChat #Discussion #MathsDiscussion #TalkTasks #FactorsOfANumber

[image or embed]

— Jon @ The Maths Vault (@mathsvault.bsky.social) April 3, 2026 at 10:30 AM

Another nice prompt
Curriculum Tags: Gr7, Gr8, MTH1W
https://bsky.app/profile/tilefarmer.bsky.social/post/3mikm2thrvk26

#ElemMathChat Q7 “Last Tile Standing” is another one of my favorites (for Tile Farm’s version go to tiletalk.tilefarm.com). I’ve chosen one of the 24 patterns above, can you think of yes/no questions that could help eliminate options? Ask and I’ll answer yes/no. Can comment below if easier.

[image or embed]

— Alex Romero (@tilefarmer.bsky.social) April 2, 2026 at 9:48 PM